Chemistry:Homogeneous alignment
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Revision as of 08:45, 5 August 2021 by imported>PolicyEnforcerIA (attribution)
In liquid crystals homogeneous alignment, sometimes called planar alignment, is the state of alignment where molecules align in parallel to a substrate. The opposite method is homeotropic alignment.
For planar alignment - polyimides can be used. One of the popular ones is PI-2555.
The surface has to be rubbed by paper or by a velvet or similar cloth in order to make the alignment axis parallel to the rubbing. However the exact mechanism if this alignment is not entirely clear.
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Original source: https://en.wikipedia.org/wiki/Homogeneous alignment.
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